diff --git a/package.json b/package.json
index 61fae9a..f65ab67 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "my-weekly-todo-list",
-  "version": "1.18.0",
+  "version": "1.19.0",
   "description": "A web-based weekly task management application that organizes to-dos and calendar events in a single, intuitive weekly view",
   "main": "index.js",
   "scripts": {
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index d341302..5e4b292 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -93,6 +93,7 @@ model User {
   showCompletedTasks       Boolean               @default(true)
   showLines                Boolean               @default(true)
   weekdayFormat            String?               @default("long")
+  weekdayCase              String?               @default("capitalize")
   customWeekdayNames       String?               @default("")
   startDayOffset           Int                   @default(-1)
   quoteSourceUrls          String[]              @default([])
diff --git a/src/app/api/user/profile/route.ts b/src/app/api/user/profile/route.ts
index 02331cf..863408b 100644
--- a/src/app/api/user/profile/route.ts
+++ b/src/app/api/user/profile/route.ts
@@ -84,6 +84,7 @@ export async function GET(request: NextRequest) {
             showLines: true,
             startDayOffset: true,
             weekdayFormat: true,
+            weekdayCase: true,
             customWeekdayNames: true,
             quoteSourceUrls: true,
             accountNumber: true,
@@ -128,7 +129,7 @@ export async function PATCH(request: NextRequest) {
             cwFontFamily, cwFontSize, cwFontWeight, cwColor,
             yearFontFamily, yearFontSize, yearFontWeight, yearColor,
             showTaskCheckboxes, dayHeaderGap,
-            showCompletedTasks, showLines, startDayOffset, weekdayFormat, customWeekdayNames, quoteSourceUrls
+            showCompletedTasks, showLines, startDayOffset, weekdayFormat, weekdayCase, customWeekdayNames, quoteSourceUrls
         } = body;
 
         const updateData: any = {
@@ -202,6 +203,7 @@ export async function PATCH(request: NextRequest) {
             ...(showLines !== undefined && { showLines }),
             ...(startDayOffset !== undefined && { startDayOffset }),
             ...(weekdayFormat !== undefined && { weekdayFormat }),
+            ...(weekdayCase !== undefined && { weekdayCase }),
             ...(customWeekdayNames !== undefined && { customWeekdayNames }),
             ...(quoteSourceUrls !== undefined && { quoteSourceUrls }),
         };
@@ -285,6 +287,7 @@ export async function PATCH(request: NextRequest) {
                 showLines: true,
                 startDayOffset: true,
                 weekdayFormat: true,
+                weekdayCase: true,
                 customWeekdayNames: true,
                 quoteSourceUrls: true,
                 accountNumber: true,
diff --git a/src/components/GridTaskBlock.tsx b/src/components/GridTaskBlock.tsx
index f7a9b99..a022d41 100644
--- a/src/components/GridTaskBlock.tsx
+++ b/src/components/GridTaskBlock.tsx
@@ -274,28 +274,6 @@ export function GridTaskBlock({
                         )}
                         <span style={task.completed && showTaskCheckboxes ? { opacity: 0.5, flex: 1, display: "flex", alignItems: "center", flexWrap: "wrap", rowGap: "2px" } : { flex: 1, display: "flex", alignItems: "center", flexWrap: "wrap", rowGap: "2px" }}>
                             <span style={{ marginRight: "4px" }}>{task.title}</span>
-                            {(() => {
-                                const provider = task.externalProvider
-                                    || (task.externalId?.startsWith("synology::") ? "synology" : null);
-                                if (!provider) return null;
-                                const iconMap: Record<string, { icon: any; color: string; label: string }> = {
-                                    google: { icon: faGoogle, color: "#4285F4", label: "Google" },
-                                    outlook: { icon: faMicrosoft, color: "#0078D4", label: "Microsoft" },
-                                    apple: { icon: faApple, color: "#555", label: "Apple" },
-                                    synology: { icon: faServer, color: "#007AFF", label: "Synology" },
-                                };
-                                const info = iconMap[provider];
-                                if (!info) return null;
-                                return (
-                                    <span
-                                        className="flex-shrink-0"
-                                        title={`Synced with ${info.label}`}
-                                        style={{ display: "inline-flex", alignItems: "center", opacity: 0.55 }}
-                                    >
-                                        <FontAwesomeIcon icon={info.icon} style={{ width: 10, height: 10, color: info.color }} />
-                                    </span>
-                                );
-                            })()}
                             {/* Subtask indicator */}
                             {task.subTasks && task.subTasks.length > 0 && (() => {
                                 const completed = task.subTasks.filter(s => s.completed).length;
@@ -362,6 +340,28 @@ export function GridTaskBlock({
                         </span>
                     </span>
                 )}
+                {(() => {
+                    const provider = task.externalProvider
+                        || (task.externalId?.startsWith("synology::") ? "synology" : null);
+                    if (!provider) return null;
+                    const iconMap: Record<string, { icon: any; color: string; label: string }> = {
+                        google: { icon: faGoogle, color: "#4285F4", label: "Google" },
+                        outlook: { icon: faMicrosoft, color: "#0078D4", label: "Microsoft" },
+                        apple: { icon: faApple, color: "#555", label: "Apple" },
+                        synology: { icon: faServer, color: "#007AFF", label: "Synology" },
+                    };
+                    const info = iconMap[provider];
+                    if (!info) return null;
+                    return (
+                        <span
+                            className="flex-shrink-0"
+                            title={`Synced with ${info.label}`}
+                            style={{ display: "inline-flex", alignItems: "center", opacity: 0.55, marginLeft: "auto", paddingLeft: "4px" }}
+                        >
+                            <FontAwesomeIcon icon={info.icon} style={{ width: 10, height: 10, color: info.color }} />
+                        </span>
+                    );
+                })()}
             </div>
 
             <div
diff --git a/src/components/SimpleDatePicker.tsx b/src/components/SimpleDatePicker.tsx
index 5894466..e4a13e4 100644
--- a/src/components/SimpleDatePicker.tsx
+++ b/src/components/SimpleDatePicker.tsx
@@ -26,13 +26,13 @@ export default function SimpleDatePicker({ selected, onSelect, onClose, language
 
     const renderHeader = () => (
         <div className="datepicker-header" style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', marginBottom: '1rem', padding: '0 0.5rem' }}>
-            <button onClick={() => setCurrentMonth(subMonths(currentMonth, 1))} style={{ padding: '0.25rem', background: 'none', border: 'none', cursor: 'pointer', color: '#9ca3af', transition: 'color 0.2s' }}>
+            <button onClick={() => setCurrentMonth(subMonths(currentMonth, 1))} style={{ padding: '0.25rem', background: 'none', border: 'none', cursor: 'pointer', color: 'var(--weekly-text-light, #9ca3af)', transition: 'color 0.2s' }}>
                 <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><polyline points="15 18 9 12 15 6"></polyline></svg>
             </button>
-            <div style={{ fontWeight: 'bold', fontSize: '0.875rem', letterSpacing: '0.05em', textTransform: 'uppercase', color: '#374151' }}>
+            <div style={{ fontWeight: 'bold', fontSize: '0.875rem', letterSpacing: '0.05em', textTransform: 'uppercase', color: 'var(--weekly-text, #374151)' }}>
                 {format(currentMonth, 'MMMM yyyy', { locale })}
             </div>
-            <button onClick={() => setCurrentMonth(addMonths(currentMonth, 1))} style={{ padding: '0.25rem', background: 'none', border: 'none', cursor: 'pointer', color: '#9ca3af', transition: 'color 0.2s' }}>
+            <button onClick={() => setCurrentMonth(addMonths(currentMonth, 1))} style={{ padding: '0.25rem', background: 'none', border: 'none', cursor: 'pointer', color: 'var(--weekly-text-light, #9ca3af)', transition: 'color 0.2s' }}>
                 <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><polyline points="9 18 15 12 9 6"></polyline></svg>
             </button>
         </div>
@@ -43,7 +43,7 @@ export default function SimpleDatePicker({ selected, onSelect, onClose, language
         const startDate = startOfWeek(currentMonth, { weekStartsOn: 1 });
         for (let i = 0; i < 7; i++) {
             days.push(
-                <div key={i} style={{ textAlign: 'center', fontSize: '0.75rem', fontWeight: 'bold', color: '#9ca3af', padding: '0.5rem 0' }}>
+                <div key={i} style={{ textAlign: 'center', fontSize: '0.75rem', fontWeight: 'bold', color: 'var(--weekly-text-light, #9ca3af)', padding: '0.5rem 0' }}>
                     {format(addDays(startDate, i), 'EEEEEE', { locale })}
                 </div>
             );
@@ -87,7 +87,7 @@ export default function SimpleDatePicker({ selected, onSelect, onClose, language
                             cursor: 'pointer',
                             transition: 'all 0.2s',
                             margin: '0 auto',
-                            color: !isCurrentMonth ? '#d1d5db' : isDaySelected ? 'white' : '#374151',
+                            color: !isCurrentMonth ? 'var(--weekly-text-light, #d1d5db)' : isDaySelected ? 'white' : 'var(--weekly-text, #374151)',
                             background: isDaySelected ? 'black' : 'transparent',
                             fontWeight: isDaySelected ? 'bold' : 'normal',
                             boxShadow: isDaySelected ? '0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06)' : 'none',
@@ -95,7 +95,7 @@ export default function SimpleDatePicker({ selected, onSelect, onClose, language
                             ...(isToday && !isDaySelected ? { color: '#ef4444', fontWeight: 'bold' } : {})
                         }}
                         onMouseEnter={(e) => {
-                            if (!isDaySelected) e.currentTarget.style.backgroundColor = '#f3f4f6';
+                            if (!isDaySelected) e.currentTarget.style.backgroundColor = 'var(--weekly-hover-bg, #f3f4f6)';
                         }}
                         onMouseLeave={(e) => {
                             if (!isDaySelected) e.currentTarget.style.backgroundColor = 'transparent';
@@ -120,28 +120,30 @@ export default function SimpleDatePicker({ selected, onSelect, onClose, language
         <div ref={modalRef} style={{
             position: 'absolute',
             top: '100%',
-            right: 0,
+            left: '50%',
+            transform: 'translateX(-50%)',
             marginTop: '0.5rem',
-            backgroundColor: 'white',
+            backgroundColor: 'var(--weekly-bg, white)',
             borderRadius: '0.5rem',
-            boxShadow: '0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04)',
+            boxShadow: '0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.08)',
             padding: '1rem',
             zIndex: 2000,
             width: '18rem',
-            border: '1px solid #f3f4f6',
+            border: '1px solid var(--weekly-border, #e5e7eb)',
             animation: 'fadeIn 0.15s ease-out'
         }}>
             {/* Decorative triangle */}
             <div style={{
                 position: 'absolute',
                 top: '-0.3rem',
-                right: '1rem',
+                left: '50%',
+                marginLeft: '-0.375rem',
                 width: '0.75rem',
                 height: '0.75rem',
-                backgroundColor: 'white',
+                backgroundColor: 'var(--weekly-bg, white)',
                 transform: 'rotate(45deg)',
-                borderTop: '1px solid #f3f4f6',
-                borderLeft: '1px solid #f3f4f6'
+                borderTop: '1px solid var(--weekly-border, #e5e7eb)',
+                borderLeft: '1px solid var(--weekly-border, #e5e7eb)'
             }}></div>
             {renderHeader()}
             {renderDays()}
diff --git a/src/components/WeeklyView.tsx b/src/components/WeeklyView.tsx
index f9f34c2..3ef932c 100644
--- a/src/components/WeeklyView.tsx
+++ b/src/components/WeeklyView.tsx
@@ -317,6 +317,10 @@ const translations: Record<string, any> = {
         weekdayFormatCustom: "Custom",
         customWeekdayNamesMon: "Mo; Tu; We; Th; Fr; Sa; Su",
         customWeekdayNamesSun: "Su; Mo; Tu; We; Th; Fr; Sa",
+        weekdayCase: "Weekday Case",
+        weekdayCaseNormal: "Normal (monday)",
+        weekdayCaseCapitalize: "Capitalize (Monday)",
+        weekdayCaseUppercase: "Uppercase (MONDAY)",
     },
     de: {
         settings: "Einstellungen",
@@ -417,6 +421,10 @@ const translations: Record<string, any> = {
         weekdayFormatCustom: "Benutzerdefiniert",
         customWeekdayNamesMon: "Mo; Di; Mi; Do; Fr; Sa; So",
         customWeekdayNamesSun: "So; Mo; Di; Mi; Do; Fr; Sa",
+        weekdayCase: "Groß-/Kleinschreibung",
+        weekdayCaseNormal: "Klein (montag)",
+        weekdayCaseCapitalize: "Großbuchstabe (Montag)",
+        weekdayCaseUppercase: "Großbuchstaben (MONTAG)",
     },
 };
 
@@ -448,23 +456,30 @@ function formatDateHeader(date: Date, locale: string = "en-US"): string {
     return date.toLocaleDateString(locale, { day: "numeric", month: "short" }); // e.g. 12. Feb.
 }
 
-function getDayName(date: Date, locale: string = "en-US", format?: string, customNames?: string, weekStartDay: number = 0): string {
+function getDayName(date: Date, locale: string = "en-US", format?: string, customNames?: string, weekStartDay: number = 0, dayCase: string = "capitalize"): string {
+    let name: string;
     if (format === "custom" && customNames) {
         // Split by comma or semicolon to allow spaces in names
         const names = customNames.split(/[,;]+/).map(s => s.trim()).filter(Boolean);
         if (names.length === 7) {
             // Adjust index based on weekStartDay (0=Sun, 1=Mon)
             const index = (date.getDay() - weekStartDay + 7) % 7;
-            return names[index].toUpperCase();
+            name = names[index];
+        } else {
+            name = date.toLocaleDateString(locale, { weekday: "long" });
+        }
+    } else {
+        const weekdayOption = format === "narrow" ? "narrow" : (format === "short" ? "short" : "long");
+        try {
+            name = date.toLocaleDateString(locale, { weekday: weekdayOption });
+        } catch (e) {
+            name = date.toLocaleDateString("en-US", { weekday: weekdayOption });
         }
     }
-    
-    const weekdayOption = format === "narrow" ? "narrow" : (format === "short" ? "short" : "long");
-    try {
-        return date.toLocaleDateString(locale, { weekday: weekdayOption }).toUpperCase();
-    } catch (e) {
-        return date.toLocaleDateString("en-US", { weekday: weekdayOption }).toUpperCase();
-    }
+    if (dayCase === "uppercase") return name.toUpperCase();
+    if (dayCase === "normal") return name.toLowerCase();
+    // capitalize: first letter uppercase, rest lowercase
+    return name.charAt(0).toUpperCase() + name.slice(1).toLowerCase();
 }
 
 function isSameDay(d1: Date, d2: Date): boolean {
@@ -804,6 +819,7 @@ export default function WeeklyView() {
         quoteSourceUrls?: string[];
         startDayOffset?: number;
         weekdayFormat?: "long" | "short" | "narrow" | "custom";
+        weekdayCase?: "normal" | "capitalize" | "uppercase";
         customWeekdayNames?: string;
         dateVerticalAlign?: "top" | "middle" | "bottom";
     }>({
@@ -921,6 +937,7 @@ export default function WeeklyView() {
     const [showSchedule, setShowSchedule] = useState(true);
     const [focusBreakDuration, setFocusBreakDuration] = useState(5);
     const [weekdayFormat, setWeekdayFormat] = useState<"long" | "short" | "narrow" | "custom">("long");
+    const [weekdayCase, setWeekdayCase] = useState<"normal" | "capitalize" | "uppercase">("capitalize");
     const [customWeekdayNames, setCustomWeekdayNames] = useState("");
 
     // New UI State
@@ -1594,6 +1611,7 @@ export default function WeeklyView() {
         setShowAllDay(newSettings.showAllDayEvents);
         setShowSchedule(newSettings.showSchedule);
         if (newSettings.weekdayFormat) setWeekdayFormat(newSettings.weekdayFormat);
+        if (newSettings.weekdayCase) setWeekdayCase(newSettings.weekdayCase);
         if (newSettings.customWeekdayNames !== undefined) setCustomWeekdayNames(newSettings.customWeekdayNames);
         setHeadlineFont(newSettings.headlineFont);
         setHeadlineFontSize(newSettings.headlineFontSize);
@@ -1701,6 +1719,8 @@ export default function WeeklyView() {
                         setShowSchedule(data.user.showSchedule);
                     if (data.user.weekdayFormat)
                         setWeekdayFormat(data.user.weekdayFormat as any);
+                    if (data.user.weekdayCase)
+                        setWeekdayCase(data.user.weekdayCase as any);
                     if (data.user.customWeekdayNames)
                         setCustomWeekdayNames(data.user.customWeekdayNames);
                     if (data.user.hourLabelFormat)
@@ -3779,9 +3799,11 @@ export default function WeeklyView() {
         "--weekly-date-weight": profile.dateFontWeight || "400",
         "--weekly-time-task-font": fontVal(profile.timeTaskFontFamily)
             ? `"${fontVal(profile.timeTaskFontFamily)}", sans-serif`
-            : "var(--weekly-font)",
-        "--weekly-time-task-size": scaleRem(profile.timeTaskFontSize || "0.75rem"),
-        "--weekly-time-task-weight": profile.timeTaskFontWeight || "500",
+            : fontVal(profile.taskFontFamily)
+                ? `"${fontVal(profile.taskFontFamily)}", sans-serif`
+                : "var(--weekly-font)",
+        "--weekly-time-task-size": scaleRem(profile.timeTaskFontSize || profile.taskFontSize || "0.9rem"),
+        "--weekly-time-task-weight": profile.timeTaskFontWeight || profile.taskFontWeight || "400",
         "--weekly-font":
             "var(--font-body)" /* Force default body font as requested */,
         "--weekly-task-font": fontVal(profile.taskFontFamily)
@@ -4927,7 +4949,7 @@ export default function WeeklyView() {
                                             className={`weekly-day-name ${isSameDay(date, new Date()) ? "is-today" : ""}`}
                                             style={{ marginBottom: 0, flexShrink: 0 }}
                                         >
-                                            {getDayName(date, language, weekdayFormat, customWeekdayNames, weekStartDay)}
+                                            {getDayName(date, language, weekdayFormat, customWeekdayNames, weekStartDay, weekdayCase)}
                                         </h3>
                                         {(activeDateLayout === "right" ||
                                             activeDateLayout === "above" ||
@@ -7085,7 +7107,7 @@ function TaskItem({
                                         <span
                                             className="flex-shrink-0"
                                             title={`Synced with ${info.label}`}
-                                            style={{ display: "inline-flex", alignItems: "center", opacity: 0.55, marginLeft: "4px" }}
+                                            style={{ display: "inline-flex", alignItems: "center", opacity: 0.55, marginLeft: "auto", paddingLeft: "4px" }}
                                         >
                                             <FontAwesomeIcon icon={info.icon} style={{ width: 12, height: 12, color: info.color }} />
                                         </span>
@@ -7709,6 +7731,7 @@ interface SettingsSidebarProps {
     dateLayout?: "above" | "below" | "left" | "right" | "hidden";
     mobileDateLayout?: "above" | "below" | "left" | "right" | "hidden";
     weekdayFormat?: "long" | "short" | "narrow" | "custom";
+    weekdayCase?: "normal" | "capitalize" | "uppercase";
     customWeekdayNames?: string;
     dateAlignment?: "left" | "center" | "right" | "tight";
     hourLabelFormat: "short" | "full";
@@ -8083,6 +8106,7 @@ function SettingsSidebar({
         startDayOffset?: number;
         id?: string;
         weekdayFormat?: "long" | "short" | "narrow" | "custom";
+        weekdayCase?: "normal" | "capitalize" | "uppercase";
         customWeekdayNames?: string;
         dateVerticalAlign?: "top" | "middle" | "bottom";
     }>({
@@ -8141,6 +8165,7 @@ function SettingsSidebar({
         todayHighlightColor: "#f0fafa",
         pastDayColor: "#a6a6a7",
         weekdayFormat: "long",
+        weekdayCase: "capitalize",
         customWeekdayNames: "",
     });
 
@@ -8252,6 +8277,7 @@ function SettingsSidebar({
             showTaskCheckboxes: profile.showTaskCheckboxes,
             startDayOffset: profile.startDayOffset,
             weekdayFormat: profile.weekdayFormat,
+            weekdayCase: profile.weekdayCase,
             customWeekdayNames: profile.customWeekdayNames,
         } as any);
     }, [profile, showTimeGrid, cellDuration, viewStyle, fontSize, showNextTask, showSomeday, showAllDay, showSchedule]);
@@ -8290,6 +8316,7 @@ function SettingsSidebar({
                                 : true,
                         cellDuration: data.user.cellDuration || 30,
                         weekdayFormat: data.user.weekdayFormat || "long",
+                        weekdayCase: data.user.weekdayCase || "capitalize",
                         customWeekdayNames: data.user.customWeekdayNames || "",
                         viewStyle: data.user.viewStyle || "list",
                         fontSize: data.user.fontSize || "M",
@@ -9466,6 +9493,35 @@ function SettingsSidebar({
                                 </div>
                             </div>
 
+                            {/* Weekday Case */}
+                            <div style={{ marginTop: "8px" }}>
+                                <label
+                                    style={{
+                                        display: "block",
+                                        fontSize: "0.9rem",
+                                        fontWeight: 600,
+                                        marginBottom: "8px",
+                                    }}
+                                >
+                                    {t.weekdayCase || "Weekday Case"}
+                                </label>
+                                <select
+                                    value={profile.weekdayCase || "capitalize"}
+                                    onChange={(e) =>
+                                        setProfile({
+                                            ...profile,
+                                            weekdayCase: e.target.value as "normal" | "capitalize" | "uppercase",
+                                        })
+                                    }
+                                    className="weekly-input"
+                                    style={{ width: "100%", padding: "8px", fontSize: "0.9rem", border: "1px solid var(--weekly-settings-input-border)", borderRadius: "4px", background: "var(--weekly-settings-input-bg)", color: "var(--weekly-settings-text)" }}
+                                >
+                                    <option value="normal">{t.weekdayCaseNormal || "Normal (monday)"}</option>
+                                    <option value="capitalize">{t.weekdayCaseCapitalize || "Capitalize (Monday)"}</option>
+                                    <option value="uppercase">{t.weekdayCaseUppercase || "Uppercase (MONDAY)"}</option>
+                                </select>
+                            </div>
+
                             <div style={{ marginTop: "8px" }}>
                                 <label
                                     style={{